The first edition of this book was designed to fill a gap that has existed for some time in technical books and instructional materials covering networking in general and Cisco technology in particular. As a trainer, I struggled to find materials that struck a middle ground between basic networking texts and books that jump immediately into certification-level topics for which many readers and students were not prepared to digest. The reaction to the first edition confirmed my belief that a book of this type is needed and drove the creation of this second edition.

There will always be a market for books designed to present and review certification-level topics to those who are already familiar with the knowledge required to understand ...

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